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BQ24702PW View Datasheet(PDF) - Texas Instruments

Part NameBQ24702PW Texas-Instruments
Texas Instruments Texas-Instruments
DescriptionMULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR
BQ24702PW Datasheet PDF : 37 Pages
First Prev 11 12 13 14 15 16 17 18 19 20 Next Last
www.ti.com
bq24702
bq24703
SLUS553E – MAY 2003 – REVISED OCTOBER 2007
ACPRES 2
VHSP
20
VHSP
REGULATOR
BLOCK DIAGRAM
VCC
22
VOLTAGE
REFERENCE
VREF
VREF
7
ACDET
HYST
1
+
VACPRES
ACSEL 3
ACPRES
ACPRES
OSC
300 kHz
2V
+
SQ
RQ
PWM
LOGIC
LEVEL
SHIFT
VCC
HIGH-SIDE
DRIVE
VHSP
21 PWM
ENABLE 8
COMP 10
ACP 12
ACN 11
ACSET 6
BATDEP 4
VS 18
ALARM 19
5V
100 µ A
2 k
+
VCC
+
ac
CURRENT
ERROR
AMPLIFIER
BATDA
+
BATTERY
VOLTAGE
VTBD
ERROR
AMPLIFIER 5 V
+
SRN
+
Zero Volt
Charging
+
VFB
2 k
0.25 V
25
k
0.8 x VNOBAT
VBATDEP
+
BATP +
DEPLETED
BATTERY
COMPARATOR
SWITCH TO
BATTERY
BATTERY
CURRENT
ERROR
AMPLIFIER
+
25
k
NO BATTERY
COMPARATOR
2
ACPRES
ACSEL
BATTERY SELECT
LOGIC
AND
ANTI-CROSS
CONDUCT
+
VCC
ADAPTER
SELECT
DRIVE
VHSP
BATTERY
SELECT
DRIVE
VCC
ACDRV
1
VCC
1 bq24702 ONLY
2 bq24703 ONLY
ACSEL
SRP
SRN
+
A=20
13 BATP
9 BATSET
16 SRP
15 SRN
5 SRSET
24 ACDRV
23 BATDRV
17 GND
14 IBAT
UDG-00137
Copyright © 2003–2007, Texas Instruments Incorporated
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